Build & Research Time Calculator
Last War shows you a build timer with no bonuses applied. Enter that base time below, add your build speed bonus and any extra buffs, and this works out the real build time you'll actually wait — plus exactly how much you save. Inputs are saved on this device.
Accepts “1d 23h 48m 2s”, “5d 20:10:00” or “20:10:00”.
Your main build speed bonus.
Extra speed-ups from items, VP, events, etc.
Final time1d 23h 48m 2s
Time saved0s
Total speed bonus0%
How it works: your construction speed bonus and other buffs add together, then the base timer is divided by that total. So
final = original ÷ (1 + total bonus ÷ 100). A bonus of 100% halves the timer; 200% takes it to a third, and so on. Bonuses in Last War are additive, not multiplicative. Figures are community-sourced and can shift with game tuning — confirm against your in-game build screen, and see the guides for ways to raise your build speed.